Luminous flame gas burner



Feb. 13, 1934. F. J. HACKER LUMINOUS FLAME GAS BURNER Filed June 5',1931 0 OO Q Q v Patented Feb. 13, 1934 UITED STATES PATENT OFFICELUMINOUS FLAME GAS BURNER Application June 3, 1931. Serial No. 541,858

6 Claims.

The present invention relates broadly to the art of gaseous fuelburning, and more particularly to an improved burner structure of thetype effective for the production of a luminous flame.

Both luminous and non-luminous flame burners are well known in the art,each having certain desirable features. It has long been known, however,that a luminous flame utilized under many conditions transfers heat at amore rapid rate than a non-luminous flame operating in the samecombustion or heating chamber.

The present invention relates to such a luminous flame burner of thetype adapted to utilize gas as the combustible medium, and of suchconstruction that adjustments may be easily made to insure the desiredluminosity under difierent conditions existing either in the furnace, inthe combustion ingredient or in the combustion supporting ingredient.

In the accompanying drawing I have shown by way of illustration only, apreferred embodiment of the invention. In the drawing:

Figure 1 is a view partly in longitudinal section, of one form of burnerconstructed in accordance with the present invention; and

Figure 2 is an end elevation of the structure 11- lustrated in Figure 1.

In accordance with the present invention, there is provided a burnercomprising a burner body 2, herein shown as being of substantiallytubular cross section having adjacent one end an air inlet connection 3.In proximity to the air inlet connection is a flange 4, for assemblypurposes, while intermediate the ends of the body is an attaching flange5. This flange, as illustrated more particularly in Figure 2 of thedrawing, is provided with a series of openings 6 by means of which theburner body may be bolted in the desired relation to a combustionchamber.

The burner body is herein illustrated as including a central tube '7providing a center air space 8, and a plurality of radially extendingdividing vanes 9 providing an outer series of air spaces 10. Thedisposition and arrangement of the center tube and the dividing vanesare preferably such that each of the air spaces will providesubstantially the same cross sectional area for the flow of airtherethrough as admitted to the burner body by the air connection 3.

Abutting against the flange 4 is a guide tube sheet 11 having suitablysecured therein a plurality of guide tubes 12, these tubes projectinginto the burner body in proper alinement with the air spaces 8 and 10respectively.

Bearing against the guide tube sheet 11 is a gas chamber 14 having a gasinlet connection 15. The inside of the gas chamber preferably has amachined surface 16 adapted to engage and guide a gas tube sheet 17.This gas tube sheet is connected to a stem 18 herein illustrated asbeing threaded and extending outwardly through an internally threadedboss 19 carrying a packing nut 20. By rotating the stem 18 in onedirection or the other through the medium of the hand wheel 21, it willbe apparent that the gas tube sheet 1'7 is moved within the gas chamber14. The gas tube sheet has secured therein in any desired manner, anumber of gas tubes 22 corresponding in number and arrangement to thenumber and arrangement of the guide tubes 12. The internal diameter ofthe guide tubes and the external diameter of the gas tubes is such thata tight sliding joint, preferably gas-tight or substantially gas-tight,is provided therebetween. Each of the gas tubes 22 extends into one ofthe air chambers 8 or 10, as will be clearly apparent from the drawing.

In operation, air from a suitable source and under suitable pressure isdelivered to the air connection 3, while gas is delivered to the gasconnection 15. The gas passes from the connection 15 into the interiorof the gas chamber which acts as a distributing header for the variousgas tubes, the gas issuing in substantially equal volumes from thevarious tubes at 2. velocity determined by the inlet pressure.

In like manner, the air from the connection 3 is distributed within theburner body to the various air chambers 8 and 10, issuing therefrom inthe form of a sheet or film embracing the movable gas tubes so as toafford an intimate contact between the gas and air. The relationship ofthe pressures utilized is preferably such that the air and gas willissue from the burner nose at equal velocities and in such quantitiesand velocities as to insure the production, when lighted, of a luminousflame. By adjusting the gas tubes axially, either inwardly or outwardlywith respect to the burner body, provision is made for adjusting theburner for different combustion conditions occasioned either by fuelconditions or furnace conditions, thereby providing a burner adaptableto use under widely difierent conditions.

To those skilled in the art it will be apparent that while it isdesirable to provide a burner body having a substantially equal numberof air spaces and gas. tubes, the number and arrangement of such spacesand tubes may be widely varied to suit the requirements of anyparticular installation. In all cases, however, it is desirable that asubstantially uniform arrangement be maintained, such as afforded by theuse of a burner body of any regular geometric form.

Other changes in the construction, disposition and arrangement of theparts may be made without departing either from the spirit of theinvention or the scope of my broader claims.

I claim:

1. In a burner, a burner body having an air connection, a series ofdividing vanes within said body forming a series of air chamberstherein, a guide tube sheet, a plurality of guide tubes carried by saidsheet in alinement with said air chambers, a gas chamber having a gasconnection, a gas tube sheet within said gas chamber, a series of gastubes carried by said gas tube sheet and extending through said guidetubes and into said air chambers, and means for adjusting said gas tubesheet.

2. In a burner, a burner body, a gas chamber in alinement With saidbody, a guide tube sheet intermediate said chamber and body and carrying a series of guide tubes projecting into said body, a burner tubesheet in said chamber carrying a series of burner tubes in alinementwith said guide tubes, means for adjusting said burner tubes, and meansproviding an air chamber within said body for each burner tube.

8. A burner of the luminous flame type, comprising a series of gastubes, a gas chamber for supplying gas to said tubes, and a bodysurrounding said series of tubes for supplying combustion supportingmedium at the outlets of said gas tubes, the outlet from said body beingdivided solely by relatively thin vanes into a series of passages, eachpassage enclosing a single gas tube, said series of gas tubes beingsimultaneously axially adjustable with respect to said body.

4. In a burner, a series of burner tubes, means for guiding said tubes,means for adjusting said tubes axially relative to said guide means,means for supplying a combustible fluid to said burner tubes, and a bodysurrounding said series of tubes for supplying combustion supportingmedium at the outlets of said burner tubes, the outlet from said bodybeing divided solely by relatively thin vanes into a series of passages,each passage enclosing a single tube.

5. In a burner, a series of burner tubes, means for supplying acombustible fluid to said burner tubes, and a burner body surroundingsaid series of tubes lor supplying combustion supporting medium at theoutlets of said burner tubes, said body having an air connection, amanifold and an outlet divided solely by relatively thin vanes into aseries of passages, each passage enclosing a single burner tube, saidburner tubes being axially adjustable with respect to said body.

6. In a burner, a burner tube plate, a series of burner tubes connectedto said plate, means for supplying a combustible fluid to said burnertubes, a burner body surrounding said series of tubes for supplyingcombustion supporting medium at the outlets of said burner tubes, saidbody having an air connection and an outlet divided solely by relativelythin vanes into a series of passages, each passage enclosing a singleburner tube, and means for adjusting said plate together with saidburner tubes axially relative to said body.

FRANK J. HACKER.

